Hardness of Solid Substances - GrindingA number of metals and nonmetals are ground with a mortar and pestle. The nonmetals shown here are all soft (due to weak intermolecular forces), but the metals vary in hardness.

Covalent Bonding |

Nonmetals |

Physical Properties |

Solids |

Metallic Bonding |

Metals

Assessment Questions: First 3 results

Bonding : MostPolarBond (8 Variations)
From the bonds listed below, choose the one that is the most polar. (Try to predict electronegativity differences based on positions of the bonded atoms in the periodic table.)

Covalent Bonding |

Periodicity / Periodic Table

Bonding : Electronegativity (8 Variations)
From the bonds listed below, choose the one in which the highlighted atom is the partially positive end of the bond. (Try to predict electronegativity differences based on positions of the bonded atoms in the periodic table.)

Covalent Bonding |

Periodicity / Periodic Table

Bonding : MatchBondStrength (8 Variations)
Match each of the following molecules to the best energy value for each bond. Do not use the table of bond energies in your book, but predict these values using your knowledge of bond length and bond strength.
Possible energies are: 300 kJ/mol, 330 kJ/mol, 415 kJ/mol and 950 kJ/mol.

Six Pillars of Organic ChemistryJoseph J. MullinsThis article focuses on a core set of conceptselectronegativity, polar covalent bonding, inductive and steric effects, resonance, and aromaticitythe proper application of which can explain and predict a wide variety of chemical, physical, and biological properties of molecules and conceptually unite important features of general, organic, and biochemistry.Mullins, Joseph J. J. Chem. Educ.2008, 85, 83.